Patents by Inventor William H. Gastrock

William H. Gastrock has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4719303
    Abstract: A method for the preparation of substituted and unsubstituted 2-[(1-carbamoyl-1,2-dimethyl-propyl) carbamoyl]-3-quinolinecarboxylic, nicotinic and benzoic acids.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: January 12, 1988
    Assignee: American Cyanamid Company
    Inventors: William H. Gastrock, Timothy F. Mason, Gregory P. Withers
  • Patent number: 4683324
    Abstract: The invention is a process for the selective and concomitant resolution-racemization-resolution of certain substituted, racemic amino nitriles via their respective tartrate salts. The invention further relates to certain resolved (optically active) amino amides prepared from said amino nitriles, and to the herbicidal substituted oxo-imidazolinyl nicotinic acids and 3-quinoline carboxylic acids prepared therefrom.
    Type: Grant
    Filed: May 25, 1982
    Date of Patent: July 28, 1987
    Assignee: American Cyanamid Company
    Inventors: William H. Gastrock, Peter J. Wepplo
  • Patent number: 4521629
    Abstract: The invention relates to a method for the preparation of certain substituted bis-arylpentadienones which are useful and valuable intermediates for the preparation of insecticidal amidinohydrazones. The invention further relates to pentadienone substituted amidimohydrazone insecticides and fire ant control agents.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: June 4, 1985
    Assignee: American Cyanamid Company
    Inventors: Nicholas A. Cortese, Jr., William H. Gastrock
  • Patent number: 4332724
    Abstract: There is provided a process for the preparation of an amido or an ureido derivative of certain 4,5,6,7-tetrahydro-7-oxobenzo[b]thiophenes or certain 1,2,3,4-tetrahydro-4-oxonaphthalenes which can be employed as an animal growth regulant. The process comprises: oxidizing in the presence of a cobalt catalyst a compound having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each a substituent selected from the group consisting of alkanoyl C.sub.1 -C.sub.7, halogen-substituted alkanoyl C.sub.1 -C.sub.7, carboalkoxy C.sub.1 -C.sub.4, ##STR2## and ##STR3## R.sub.3 is selected from the group consisting of hydrogen and alkyl C.sub.1 -C.sub.4 ; R.sub.4 is selected from the group consisting of hydr ogen, alkyl C.sub.1 -C.sub.8, alkanoyl C.sub.2 -C.sub.4, halogen-substituted alkanoyl (C.sub.2 -C.sub.
    Type: Grant
    Filed: November 16, 1977
    Date of Patent: June 1, 1982
    Assignee: American Cyanamid Co.
    Inventors: Terence J. Bentley, William H. Gastrock, Goro Asato
  • Patent number: 4136117
    Abstract: This invention relates to a novel process for the preparation of N-alkylated and N,N-dialkylated 2,6-dinitroaniline herbicidal agents.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: January 23, 1979
    Assignee: American Cyanamid Company
    Inventors: Robert E. Diehl, Stephen D. Levy, William H. Gastrock
  • Patent number: 4125539
    Abstract: There are provided substituted 1,3-dithiolane compounds and a method for preparing the same. Said 1,3-dithiolane compounds are useful intermediates in the preparation of tetrahydro-7-oxobenzo[b]thien-4-ylureas and tetrahydro-4-oxo-1-naphthylureas which are known animal growth-promotong agents, which thiolanes are represented by the formula: ##STR1## wherein R.sub.1 is a member selected from the group consisting of 2-thienyl and phenyl; R.sub.2 is a member selected from the group consisting of ##STR2## wherein X is chlorine or bromine; R.sub.3 and R.sub.4 are each members selected from the group consisting of hydrogen and methyl; and when R.sub.1 and R.sub.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: November 14, 1978
    Assignee: American Cyanamid Company
    Inventors: William H. Gastrock, Goro Asato